File Object Predicates

Function: filep object

This function returns t when its argument is a file object.

Function: file-bound-p file-object

Returns t when the file object file-object is currently bound to a physical file (i.e. the close function hasn't been called on it yet).

Function: file-eof-p file-object

This function returns t when the current position of the file object file-object is the end of the file (i.e. when reading a character from the file would return nil).

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